diff --git a/.bonsai.yml b/.bonsai.yml
index cf5e417..8562dbe 100644
--- a/.bonsai.yml
+++ b/.bonsai.yml
@@ -63,4 +63,11 @@ builds:
   -  "entity.system.arch == 'amd64'"
   -  "entity.system.platform_family == 'debian'"
   -  "entity.system.platform_version.split('.')[0] == '9'"
-
+- platform: "debian"
+  arch: "amd64"
+  asset_filename: "#{repo}_#{version}_debian_linux_amd64.tar.gz"
+  sha_filename: "#{repo}_#{version}_sha512-checksums.txt"
+  filter:
+  -  "entity.system.os == 'linux'"
+  -  "entity.system.arch == 'amd64'"
+  -  "entity.system.platform_family == 'debian'"
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..8e6be22
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,14 @@
+version: 2
+updates:
+- package-ecosystem: bundler
+  directory: "/"
+  schedule:
+    interval: daily
+  ignore:
+  - dependency-name: rubocop
+    versions:
+    - 1.10.0
+    - 1.11.0
+    - 1.12.0
+    - 1.9.0
+    - 1.9.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1b2a3c..1ffcda1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,17 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This CHANGELOG follows the format listed [here](https://github.com/sensu-plugins/community/blob/master/HOW_WE_CHANGELOG.md).
 
 ## [Unreleased]
+## [4.3.0] - 2021-09-15
+
+### Added
+- asset for generic debian build (including ubuntu) (@VeselaHouba)
+
+### Fixed
+- Fixing asset build directive for centos6, using package repository archive now that centos6 is EOL
+
+## [4.2.0] - 2020-11-29
+### Added
+- new `bin/metric-postgres-relation-size.rb` find largest tables (@phumpal)
 
 ## [4.1.0] - 2020-06-04
 ### Added
@@ -217,7 +228,9 @@ This CHANGELOG follows the format listed [here](https://github.com/sensu-plugins
 ### Added
 - initial release
 
-[Unreleased]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.1.0...HEAD
+[Unreleased]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.3.0...HEAD
+[4.3.0]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.2.0...4.3.0
+[4.2.0]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.1.0...4.2.0
 [4.1.0]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.0.2...4.1.0
 [4.0.2]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.0.1...4.0.2
 [4.0.1]: https://github.com/sensu-plugins/sensu-plugins-postgres/compare/4.0.0...4.0.1
diff --git a/README.md b/README.md
index addbb06..0486c52 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@
  * bin/metric-postgres-statsio.rb
  * bin/check-postgres-query.rb
  * bin/metrics-postgres-query.rb
+ * bin/metric-postgres-relation-size.rb
 
 ## Usage
 
diff --git a/asset_build_scripts/Dockerfile.centos6 b/asset_build_scripts/Dockerfile.centos6
index 30d91aa..8b09c28 100644
--- a/asset_build_scripts/Dockerfile.centos6
+++ b/asset_build_scripts/Dockerfile.centos6
@@ -6,6 +6,7 @@ ARG GREP_EXCLUDE='(ld.so|ld-linux-x86-64.so|libBrokenLocale.so|libSegFault.so|li
 ARG RUBY_VERSION=2.4.4
 
 WORKDIR /assets/build/
+RUN curl https://www.getpagespeed.com/files/centos6-eol.repo --output /etc/yum.repos.d/CentOS-Base.repo
 RUN yum install -y git 
 RUN yum install -y https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-6-x86_64/pgdg-redhat-repo-latest.noarch.rpm
 RUN yum install -y postgresql95 postgresql95-libs postgresql95-devel
diff --git a/asset_build_scripts/Dockerfile.centos8 b/asset_build_scripts/Dockerfile.centos8
new file mode 100644
index 0000000..5d5709e
--- /dev/null
+++ b/asset_build_scripts/Dockerfile.centos8
@@ -0,0 +1,25 @@
+FROM sensu/sensu-ruby-runtime-2.4.4-centos8:latest as builder
+ARG ASSET_GEM
+ARG GIT_REF
+ARG GIT_REPO
+ARG GREP_EXCLUDE='(ld.so|ld-linux-x86-64.so|libBrokenLocale.so|libSegFault.so|libanl.so|libc.so|libdl.so|libm.so|libmvec.so|libnss_compat.so|libnss_dns.so|libnss_files.so|libpthread.so|libresolv.so|librt.so|libthread_db.so|libutil.so|vdso.so)'
+ARG RUBY_VERSION=2.4.4
+
+WORKDIR /assets/build/
+RUN yum install -y git 
+RUN yum install -y https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
+RUN yum config-manager --disable pgdg*
+RUN yum config-manager --enable pgdg95
+RUN yum list "postgresql95*"
+RUN yum install --disablerepo=appstream -y postgresql95 postgresql95-libs postgresql95-devel
+ENV CONFIGURE_ARGS="with-pg-config=/usr/pgsql-9.5/bin/pg_config"
+
+RUN \
+  gem install --no-ri --no-doc bundler && \
+  printf "source 'https://rubygems.org'\n\ngem \"%s\", :git => \"%s\" , :ref => \"%s\"\n" ${ASSET_GEM} ${GIT_REPO} ${GIT_REF}| tee Gemfile 
+RUN bundle install --path=lib/ --binstubs=bin/ --standalone 
+RUN tar -czf /assets/${ASSET_GEM}.tar.gz -C /assets/build/ .
+
+FROM scratch
+ARG ASSET_GEM
+COPY --from=builder /assets/${ASSET_GEM}.tar.gz /
diff --git a/bin/metric-postgres-relation-size.rb b/bin/metric-postgres-relation-size.rb
new file mode 100755
index 0000000..efd2b05
--- /dev/null
+++ b/bin/metric-postgres-relation-size.rb
@@ -0,0 +1,118 @@
+#! /usr/bin/env ruby
+# frozen_string_literal: false
+
+#  metrics-postgres-relation-size.rb
+# DESCRIPTION:
+#
+#   This plugin finds the total size of the largest tables.
+#
+#   https://www.postgresql.org/docs/current/functions-admin.html#FUNCTIONS-ADMIN-DBOBJECT
+#
+# OUTPUT:
+#   metric data
+#
+# PLATFORMS:
+#   Linux
+#
+# DEPENDENCIES:
+#   gem: sensu-plugin
+#   gem: pg
+#
+# USAGE:
+#   ./metric-postgres-relation-size.rb -u db_user -p db_pass -h db_host -d db
+#
+# NOTES:
+#
+# LICENSE:
+#   Copyright (c) 2020 Airbrake Technologies, Inc <support@airbrake.io>
+#   Author Patrick Humpal <patrick@netvilla.net>
+#   Released under the same terms as Sensu (the MIT license); see LICENSE
+#   for details.
+#
+
+require 'sensu-plugins-postgres/pgpass'
+require 'sensu-plugin/metric/cli'
+require 'pg'
+require 'socket'
+
+class PostgresStatsDBMetrics < Sensu::Plugin::Metric::CLI::Graphite
+  option :pgpass,
+         description: 'Pgpass file',
+         short: '-f FILE',
+         long: '--pgpass',
+         default: ENV['PGPASSFILE'] || "#{ENV['HOME']}/.pgpass"
+
+  option :user,
+         description: 'Postgres User',
+         short: '-u USER',
+         long: '--user USER'
+
+  option :password,
+         description: 'Postgres Password',
+         short: '-p PASS',
+         long: '--password PASS'
+
+  option :hostname,
+         description: 'Hostname to login to',
+         short: '-h HOST',
+         long: '--hostname HOST'
+
+  option :port,
+         description: 'Database port',
+         short: '-P PORT',
+         long: '--port PORT'
+
+  option :database,
+         description: 'Database name',
+         short: '-d DB',
+         long: '--db DB'
+
+  option :scheme,
+         description: 'Metric naming scheme, text to prepend to $queue_name.$metric',
+         long: '--scheme SCHEME',
+         default: "#{Socket.gethostname}.postgresql"
+
+  option :timeout,
+         description: 'Connection timeout (seconds)',
+         short: '-T TIMEOUT',
+         long: '--timeout TIMEOUT',
+         default: nil
+
+  option :limit,
+         description: 'Limit query to this many results',
+         short: '-L LIMIT',
+         login: '--limit LIMIT',
+         default: 25
+
+  include Pgpass
+
+  def run
+    timestamp = Time.now.to_i
+    pgpass
+    con = PG.connect(host: config[:hostname],
+                     dbname: config[:database],
+                     user: config[:user],
+                     password: config[:password],
+                     port: config[:port],
+                     connect_timeout: config[:timeout])
+
+    # https://wiki.postgresql.org/wiki/Disk_Usage
+    request = [
+      "SELECT nspname || '.' || relname AS relation,
+       pg_total_relation_size(C.oid) AS total_size
+       FROM pg_class C
+       LEFT JOIN pg_namespace N on (N.oid = C.relnamespace)
+       WHERE nspname NOT IN ('pg_catalog', 'information_schema')
+       ORDER BY pg_total_relation_size(C.oid) DESC
+       LIMIT '#{config[:limit]}'"
+    ]
+
+    con.exec(request.join(' ')) do |result|
+      result.each do |row|
+        output "#{config[:scheme]}.size.#{config[:database]}.#{row['relation']}", row['total_size'], timestamp
+      end
+    end
+
+    ok
+  end
+end
diff --git a/lib/sensu-plugins-postgres/version.rb b/lib/sensu-plugins-postgres/version.rb
index 24610d4..f180007 100644
--- a/lib/sensu-plugins-postgres/version.rb
+++ b/lib/sensu-plugins-postgres/version.rb
@@ -3,7 +3,7 @@
 module SensuPluginsPostgres
   module Version
     MAJOR = 4
-    MINOR = 1
+    MINOR = 3
     PATCH = 0
 
     VER_STRING = [MAJOR, MINOR, PATCH].compact.join('.')
diff --git a/sensu-plugins-postgres.gemspec b/sensu-plugins-postgres.gemspec
index d851f12..98d4299 100644
--- a/sensu-plugins-postgres.gemspec
+++ b/sensu-plugins-postgres.gemspec
@@ -38,12 +38,12 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency 'sensu-plugin', '~> 4.0'
 
-  s.add_runtime_dependency 'dentaku',      '3.3.4'
-  s.add_runtime_dependency 'pg',           '1.2.2'
+  s.add_runtime_dependency 'dentaku',      '3.4.2'
+  s.add_runtime_dependency 'pg',           '1.2.3'
 
   s.add_development_dependency 'bundler',                   '~> 2.1'
   s.add_development_dependency 'codeclimate-test-reporter', '~> 1.0'
-  s.add_development_dependency 'github-markup',             '~> 3.0'
+  s.add_development_dependency 'github-markup',             '~> 4.0'
   s.add_development_dependency 'kitchen-docker',            '~> 2.6'
   s.add_development_dependency 'kitchen-localhost',         '~> 0.3'
   s.add_development_dependency 'mixlib-shellout',           '~> 2.4'